md321t on 2ltr laggy!!!!
How does it feel on the road? For example you are driving in a 30 mph zone and enter a 50 mph zone then slow to a 30mph zone then enter a 70mph zone etc.
Response wise and thrown to the seat or no different to a vf35?
Response wise and thrown to the seat or no different to a vf35?
I heard from a reliable source, on a back to back comparison, same car same Dyno there was little difference in the billet/ non-billet T. Of course Lateral will say you can get another 50hp over the non-billet H with similar spool-up.
Trev
Trev
Last edited by trevsjwood; Jul 8, 2012 at 08:24 PM.
I think you should sort out what you already have before you start going to the expense of removing the turbo, fitting a billet wheel and remapping.
Please post the boost and AFR plot for meaningful guidance.
The billet will not make a substantial difference in my experience.
You cannot compare a 321H with a 321T. Completely different turbos. A bit like comparing apples and oranges but they are both health fruits.
Subject to seeing your AFR and boost plots I think you need to talk this through with your mapper.
With full supporting mods a 321T has 1 bar in 4th on a level road by 3,600 rpm or thereabouts and full boost 500 to 700 RPM later from memory with my trick uppipe but get someone elde with that setup to confirm their figres but remember the car's own rev counter often over reads.
Please post the boost and AFR plot for meaningful guidance.
The billet will not make a substantial difference in my experience.
You cannot compare a 321H with a 321T. Completely different turbos. A bit like comparing apples and oranges but they are both health fruits.
Subject to seeing your AFR and boost plots I think you need to talk this through with your mapper.
With full supporting mods a 321T has 1 bar in 4th on a level road by 3,600 rpm or thereabouts and full boost 500 to 700 RPM later from memory with my trick uppipe but get someone elde with that setup to confirm their figres but remember the car's own rev counter often over reads.
Just to show another persons opinion:
MD321 Billet thread
I personally found the MDX321T extremely responsive. Full boost in 5th at 3050rpm according to Andy.F
I have to say I was well impressed with the spool on the billet T on a 2.0. I have always been a fan of the T on a 2.5, I've been using one on my own 2.5 Spec C for a number of years now however I always found them a bit 'sleepy' on a 2.0. You could ofter get caught out in the wrong gear and have to shift down unexpectedly in order to wake it up! Not now with the new version, works really well on a 2.0.
Mark will tell you, I have always said I wouldn't swap a 20G for a T on a 2.0 for road use......I would now happily make the change to a Billet T as it doesn't lose out on response. As for power potential, maximum airflow volume seems similar to the original T, it may make more but I have not done a back to back on the same car to verify that.
Edit to add, don't go too big on upipe diameter, this will kill the spool and gain you nothing at the top end. I think Abbas's car had a Harvey Smith tapered uppipe on there and it worked well. Having tried many other options, I went back to using a lightly ported OE uppipe on my T on the 2.5
Mark will tell you, I have always said I wouldn't swap a 20G for a T on a 2.0 for road use......I would now happily make the change to a Billet T as it doesn't lose out on response. As for power potential, maximum airflow volume seems similar to the original T, it may make more but I have not done a back to back on the same car to verify that.
Edit to add, don't go too big on upipe diameter, this will kill the spool and gain you nothing at the top end. I think Abbas's car had a Harvey Smith tapered uppipe on there and it worked well. Having tried many other options, I went back to using a lightly ported OE uppipe on my T on the 2.5
I personally found the MDX321T extremely responsive. Full boost in 5th at 3050rpm according to Andy.F
Love my T after I took it to Mark to get the billet.
I've just looked at the power graph Craig. Is that 404bhp? A t or billet should make in reality on your set up anything from 440bhp / 450bhp on v power.
Belt slipped a tooth?
I've just looked at the power graph Craig. Is that 404bhp? A t or billet should make in reality on your set up anything from 440bhp / 450bhp on v power.
Belt slipped a tooth?
Scooby Regular
Joined: May 2001
Posts: 351
Likes: 0
Put the boost plot up Craig, does the spike may be just were the boost is coming in then being controlled back to the 1.55 bar I think you are running? Power is about right I would've thought at that boost level on a 2litre. Don't think the billet will noticeably improve spool but gives more power. Come take me for a spin, will tell you what I think from an outsiders view!
Hi Craig
How it feels on the road?
I would really sent your T to the Mark@Lateral Performance for Billet conversion
Second thing will be have look for aftermarket ECU(Syvecs or SimTek/AlcaTek),which can allow you run the multiple fuel maps plus no MAF,better boost control and no need go with aftermarket boost controller at any level
Jura
How it feels on the road?
I would really sent your T to the Mark@Lateral Performance for Billet conversion
Second thing will be have look for aftermarket ECU(Syvecs or SimTek/AlcaTek),which can allow you run the multiple fuel maps plus no MAF,better boost control and no need go with aftermarket boost controller at any level
Jura
We are made on the 1.45 bar around 420bhp,on 1.7bar we are made 452.2bhp,this has been on V-power only
When I'm looking on your boost graph,seems is little laggy,but still after that nicely holding the boost until end
When i'm comparing to our one,we are hitting full boost around 3800RPM,but this is on the 2.1 with OE JDM WRX AVCS heads,wish we have STi heads
I know what you are mean with the selling,been there before
Jura
Scooby Regular
Joined: Mar 2000
Posts: 8,619
Likes: 24
From: 5 beats 4 - RS3 Rulez!!!
STOP the judgement by forum mate..... speak to your mapper and ask his opinion. If he doesn't give you a response you're happy with, speak to another professional in the tuning industry.